Spring-mattress.



PATENTED JAN. 28, 1908.

v H. M. BROOK. SPRING MATTRESS.

APPLICATION FILED AUG. 12. 1907.

HIRAM M. BROOK, OF LONDON, KENTUCKY.

SPRING-MATTRES S.

Specification of Letters Patent.

Patented Jan. 28, 1908.

Application filed August 12.1907. Serial no. 388.193.

To all whom it may concern:

Be it known that I, HIRAM M. BROOK, a citizen of the United States, residing at London,.in the county of Laurel and State of Kentucky, have invented a new anduseful Spring-Mattress, of which the following is a specification.

This invention relates to spring mattresses.

The object of the invention is in a ready and practical manner and without increasing the width of the bed frame,tha-t is to say, the distance between the side rails thereof, materially to add to the width of the mattress, whereby it will be adapted to accommodate a greater number of occu ants with comfort and ease than would 0t erwise be possible; furthermore in a novel manner to retain the mattress under such tension as positively to prevent sagging or undue yieldin in use, and to provide for the ready removal of the mattress when it deteriorates to such an extent as to render it unfit for further use.

With the above and other objects in View as will appear as the nature of the invention is better understood, the same consists in the novel construction and. combination of parts of a spring mattress for beds, as will .be iereinafter fully described and claimed.

In the accompanying drawings forming a part of this specification and in which like characters of reference indicate corresponding parts,Figure 1 is a view in plan, partly in section, of a bed equipped with the mattress of the present invention. Fig. 2 is a vertical longitudinal sectional view taken on the line 22 of Fig. 1, certain parts being omitted for clearness of illustration. Fig. 3 is a'similar view taken on the line 33 of Fig. 1. Fig. 4 is a perspective detail view of a portion of the mattress tensioning shaft. Fig. 5 is a perspective view of a locking key or wedge that coacts with the tension shaft to prevent the same from turning.

Referrin to the drawings, S designates the side rai s, E the end rails and P the posts of an ordinary metallic bed frame, and as these parts may be of the usual or any preferred construction more specific description thereof is deemed unnecessary.

The resent invention resides in the novel form of mattress that is designed to be firmly but detachably secured to the bed frame and in such manner as to be retained against any movement, whereby the disagreeable noises frequently accompan ing the use of ordinary mattresses and resu ting from the person turning over in bed or shifting his position, will be obviated.

The mattress comprises two supports or frames 1 and 2, which are designed to rest upon the side rails and may be of alength equal to the width between the outer sides of the rails, as shown in full lines in Fig. 1, or may extend at each end beyond the same, as indicated by dotted lines in the same figure. These frames are preferably made of cast metal and in one piece, and each comprises a bottom wall 3, two end walls 4, and a back wall 5. The supports are secured to the bed frames in any preferred manner, in this instance by J-bolts 6 that partially encircle the posts T and project through the back walls 5 and carry on their inner ends nuts 7 that bear against the inner faces of the walls 5 and serve to force the supports firmly against the posts.

Projecting through orifices in the walls 4 of each support is a shaft 8 and 9, respectively, each of which is longitudinally slotted at 10 to receive an end of the wire mattress 11 which may be of the usual or any preferred construction. The shaft 9 is held against rotation relatively to the support 2 by pins or bolts 12 that extend partially through the end walls thereof and preferably entirely through the shaft. The shaft 8 is revolubly mounted in the support 1 and is provided with a polygonal terminal 13 to be engaged by a wrench or crank to. effect its turning.

Projecting from the bottom wall of the support 1 are a plurality of ribs 14, in this instance two in number, that carry upward curved guards 15 disposed in front of the shaft 8 whereby to prevent the same from springing when the mattress is being placed under tension or when occupied. One end of the shaft is provided with a notch or seat 16 arranged circumferentially thereof, and designed to be engaged by a Wedge or key 17 to hold the shaft against turning when the mattress has once been adjusted. To stay the mattress, cross braces 18 and 19 are employed which may be composed of coiled springs disposed beneath the mattress and the ends of which are formed into hooks to engage with the bottom walls of the two supports adjacent to their ends, as clearly shown in Fig.1. The supports and mattress may be made of standard widths, or as above stated, the supports may be of greater widths than the ordinary bed frames, whereby to extend beyond the side rails thereof and thus present an extended mattress surface. As shown in Fig. 2 the mattress 11 will be disposed at such distance above the side rails that when occupied there will be no danger of its contacting with the rails, which would of necessity be a source of discomfort.

In assembling the mattress with the supports, one end is first inserted through the slot in the shaft 9 and one or more turns of the mattress around the shaft is taken, as show-n in Fig. 2, after which the pins or bolts 12 are positioned. The other end of the mattress is then inserted through the slot in the shaft 8 and a wrench or crank is applied to the polygonal terminal 13, and the shaft is turned until the mattress is placed under the requisite tension, after which the shaft is locked against movement by the key 17. Of course it will be understood that before the mattress is assembled with the shafts the supports are secured to the posts by the bolts 6 as described.

While the invention has been exhibited as assembled with an ordinary metallic bed, it is to be understood that it is not to be limited to this use alone as it may be employed in connection with other forms of beds, merely by varying the construction of the bolts 6, if found necessary or desirable.

A feature to be noted in connection with this mattress is that there are no side bars or rails connecting the supports 1 and 2, so

that those portions of the mattress that lie adjacent to or overlie the side rails S will be as comfortable to occupy as the intermediate portions of the mattress.

What is claimed is:-

1. A mattress comprising two suports, a 40 longitudinally slotted non rotatab e shaft carried by one of the supports, a longitudinally-slotted rotatable shaft carried by the,

other support and provided with a circum- 1 ferential seat, a mattress having its termi- 45.

nals held in the slots of the shafts, and a key inserted in the seat and bearing against the bottom wall of the support to hold the last named shaft against rotation.

2. A mattress comprising two supports, aso

longitudinally slotted non rotatable shaft carried by one of the supports, a longitudinally-slotted rotatable shaft carried by the other support and. provided with a circumferential seat, guards carried by the latter support and disposed in front of the last named shaft, a mattress having its terminals held in the slots of the shafts, and a key inserted in the seat and bearing against the bottom wall of the support to hold the rota- 

